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圆展开---探究圆周率
Author:
陈宜红
GeoGebra
New Resources
錐體建築師
異分母分數減法
【案例】2013年安徽高考15题
畫出對稱圖形
拼砌四邊形
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this is math pic
根據百分率找數量（一）: 例4
gjh-g03-00 和的平方公式的副本
连续半圆上的动点运动规律
任意三棱锥的外接球
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Parametric Curves
Cylinder
Plane Figures or Shapes
Rotation
Solids or 3D Shapes